// This is part of Pico Library\r
\r
// (c) Copyright 2004 Dave, All rights reserved.\r
-// (c) Copyright 2006 notaz, All rights reserved.\r
+// (c) Copyright 2007 notaz, All rights reserved.\r
// Free for non-commercial use.\r
\r
// For commercial use, separate licencing terms must be obtained.\r
goto end;\r
}\r
\r
+#if 0\r
+ if (a == 0x200000 && SekPc == 0xff0b66 && Pico.m.frame_count > 1000)\r
+ {\r
+ int i;\r
+ FILE *ff;\r
+ unsigned short *ram = (unsigned short *) Pico.ram;\r
+ // unswap and dump RAM\r
+ for (i = 0; i < 0x10000/2; i++)\r
+ ram[i] = (ram[i]>>8) | (ram[i]<<8);\r
+ ff = fopen("ram.bin", "wb");\r
+ fwrite(ram, 1, 0x10000, ff);\r
+ fclose(ff);\r
+ exit(0);\r
+ }\r
+#endif\r
+\r
// word RAM\r
if ((a&0xfc0000)==0x200000) {\r
dprintf("m68k_wram r8: [%06x] @%06x", a, SekPc);\r
if ((a&0xffffc0)==0xa12000)\r
rdprintf("m68k_regs w32: [%02x] %08x @%06x", a&0x3f, d, SekPc);\r
\r
-#if 0\r
- if ((a&0x3f) == 0x1c && SekPc == 0xffff05ba)\r
- {\r
- int i;\r
- FILE *ff;\r
- unsigned short *ram = (unsigned short *) Pico.ram;\r
- // unswap and dump RAM\r
- for (i = 0; i < 0x10000/2; i++)\r
- ram[i] = (ram[i]>>8) | (ram[i]<<8);\r
- ff = fopen("ram.bin", "wb");\r
- fwrite(ram, 1, 0x10000, ff);\r
- fclose(ff);\r
- exit(0);\r
- }\r
-#endif\r
-\r
OtherWrite16(a, (u16)(d>>16));\r
OtherWrite16(a+2,(u16)d);\r
}\r
\r
// -----------------------------------------------------------------\r
\r
+\r
+#if defined(EMU_C68K)\r
+static __inline int PicoMemBaseM68k(u32 pc)\r
+{\r
+ int membase=0;\r
+\r
+ if (pc < 0x20000)\r
+ {\r
+ membase=(int)Pico_mcd->bios; // Program Counter in BIOS\r
+ }\r
+ else if ((pc&0xe00000)==0xe00000)\r
+ {\r
+ membase=(int)Pico.ram-(pc&0xff0000); // Program Counter in Ram\r
+ }\r
+ else if ((pc&0xfc0000)==0x200000 && !(Pico_mcd->s68k_regs[3]&4))\r
+ {\r
+ membase=(int)Pico_mcd->word_ram-0x200000; // Program Counter in Word Ram\r
+ }\r
+ else\r
+ {\r
+ // Error - Program Counter is invalid\r
+ dprintf("m68k: unhandled jump to %06x", pc);\r
+ membase=(int)Pico.rom;\r
+ }\r
+\r
+ return membase;\r
+}\r
+\r
+\r
+static u32 PicoCheckPcM68k(u32 pc)\r
+{\r
+ pc-=PicoCpu.membase; // Get real pc\r
+ pc&=0xfffffe;\r
+\r
+ PicoCpu.membase=PicoMemBaseM68k(pc);\r
+\r
+ return PicoCpu.membase+pc;\r
+}\r
+\r
+\r
+static __inline int PicoMemBaseS68k(u32 pc)\r
+{\r
+ int membase;\r
+\r
+ membase=(int)Pico_mcd->prg_ram; // Program Counter in Prg RAM\r
+ if (pc >= 0x80000)\r
+ {\r
+ // Error - Program Counter is invalid\r
+ dprintf("s68k: unhandled jump to %06x", pc);\r
+ }\r
+\r
+ return membase;\r
+}\r
+\r
+\r
+static u32 PicoCheckPcS68k(u32 pc)\r
+{\r
+ pc-=PicoCpuS68k.membase; // Get real pc\r
+ pc&=0xfffffe;\r
+\r
+ PicoCpuS68k.membase=PicoMemBaseS68k(pc);\r
+\r
+ return PicoCpuS68k.membase+pc;\r
+}\r
+#endif\r
+\r
+\r
+void PicoMemSetupCD()\r
+{\r
+ dprintf("PicoMemSetupCD()");\r
+#ifdef EMU_C68K\r
+ // Setup m68k memory callbacks:\r
+ PicoCpu.checkpc=PicoCheckPcM68k;\r
+ PicoCpu.fetch8 =PicoCpu.read8 =PicoReadM68k8;\r
+ PicoCpu.fetch16=PicoCpu.read16=PicoReadM68k16;\r
+ PicoCpu.fetch32=PicoCpu.read32=PicoReadM68k32;\r
+ PicoCpu.write8 =PicoWriteM68k8;\r
+ PicoCpu.write16=PicoWriteM68k16;\r
+ PicoCpu.write32=PicoWriteM68k32;\r
+ // s68k\r
+ PicoCpuS68k.checkpc=PicoCheckPcS68k;\r
+ PicoCpuS68k.fetch8 =PicoCpuS68k.read8 =PicoReadS68k8;\r
+ PicoCpuS68k.fetch16=PicoCpuS68k.read16=PicoReadS68k16;\r
+ PicoCpuS68k.fetch32=PicoCpuS68k.read32=PicoReadS68k32;\r
+ PicoCpuS68k.write8 =PicoWriteS68k8;\r
+ PicoCpuS68k.write16=PicoWriteS68k16;\r
+ PicoCpuS68k.write32=PicoWriteS68k32;\r
+#endif\r
+}\r
+\r
+\r
#ifdef EMU_M68K\r
unsigned char PicoReadCD8w (unsigned int a) {\r
return m68ki_cpu_p == &PicoS68kCPU ? PicoReadS68k8(a) : PicoReadM68k8(a);\r
a&=0xffffff;\r
if(m68ki_cpu_p == &PicoS68kCPU) {\r
if (a < 0x80000) return *(u8 *)(Pico_mcd->prg_ram+(a^1)); // PRG Ram\r
- else dprintf("s68k read_pcrel8 @ %06x", a);\r
+ dprintf("s68k_read_pcrelative_CD8: can't handle %06x", a);\r
} else {\r
- if(a<Pico.romsize) return *(u8 *)(Pico.rom+(a^1)); // Rom\r
+ if(a<0x20000) return *(u8 *)(Pico.rom+(a^1)); // Bios\r
if((a&0xe00000)==0xe00000) return *(u8 *)(Pico.ram+((a^1)&0xffff)); // Ram\r
+ if(!(Pico_mcd->s68k_regs[3]&4) && (a&0xfc0000)==0x200000)\r
+ return Pico_mcd->word_ram[(a^1)&0x3fffe];\r
+ dprintf("m68k_read_pcrelative_CD8: can't handle %06x", a);\r
}\r
return 0;//(u8) lastread_d;\r
}\r
a&=0xffffff;\r
if(m68ki_cpu_p == &PicoS68kCPU) {\r
if (a < 0x80000) return *(u16 *)(Pico_mcd->prg_ram+(a&~1)); // PRG Ram\r
- else dprintf("s68k read_pcrel16 @ %06x", a);\r
+ dprintf("s68k_read_pcrelative_CD16: can't handle %06x", a);\r
} else {\r
- if(a<Pico.romsize) return *(u16 *)(Pico.rom+(a&~1)); // Rom\r
+ if(a<0x20000) return *(u16 *)(Pico.rom+(a&~1)); // Bios\r
if((a&0xe00000)==0xe00000) return *(u16 *)(Pico.ram+(a&0xfffe)); // Ram\r
+ if(!(Pico_mcd->s68k_regs[3]&4) && (a&0xfc0000)==0x200000)\r
+ return *(u16 *)(Pico_mcd->word_ram+(a&0x3fffe));\r
+ dprintf("m68k_read_pcrelative_CD16: can't handle %06x", a);\r
}\r
- return 0;//(u16) lastread_d;\r
+ return 0;\r
}\r
unsigned int m68k_read_pcrelative_CD32(unsigned int a) {\r
a&=0xffffff;\r
if(m68ki_cpu_p == &PicoS68kCPU) {\r
if (a < 0x80000) { u16 *pm=(u16 *)(Pico_mcd->prg_ram+(a&~1)); return (pm[0]<<16)|pm[1]; } // PRG Ram\r
- else dprintf("s68k read_pcrel32 @ %06x", a);\r
+ dprintf("s68k_read_pcrelative_CD32: can't handle %06x", a);\r
} else {\r
- if(a<Pico.romsize) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r
+ if(a<0x20000) { u16 *pm=(u16 *)(Pico.rom+(a&~1)); return (pm[0]<<16)|pm[1]; }\r
if((a&0xe00000)==0xe00000) { u16 *pm=(u16 *)(Pico.ram+(a&0xfffe)); return (pm[0]<<16)|pm[1]; } // Ram\r
+ if(!(Pico_mcd->s68k_regs[3]&4) && (a&0xfc0000)==0x200000)\r
+ { u16 *pm=(u16 *)(Pico_mcd->word_ram+(a&0x3fffe)); return (pm[0]<<16)|pm[1]; }\r
+ dprintf("m68k_read_pcrelative_CD32: can't handle %06x", a);\r
}\r
- return 0; //lastread_d;\r
+ return 0;\r
}\r
#endif // EMU_M68K\r
\r
notaz.gp2x.de / picodrive.git / blobdiff